The main aim of this study is to evaluate phytochemical screening of petroleum ether, ethanol and methanolic extracts from the leaves of Galinsoga parviflora Cav. Asteraceae from Nilgiris India. Chemical constituents such as alkaloid, steroid, flavonoids, tri terpenoids, simple sugar aminoacid and fatty acids were detected from the dried leaves of Galinsoga parviflora by using various solvent extract. To my knowledge, in India, this is the first report against antimicrobial activity and phytochemical screening of a weed called Gallant soldier.